﻿<!DOCTYPE html>
<html>
<head>
  <title>ol-ext: OL3 feature animation</title>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

  <meta name="description" content="ol.featureAnimation are used to play animations on ol3 maps." />
  <meta name="keywords" content="ol3, animation, drop, slide, throw, fade, bounce, easing" />

  <!-- jQuery -->
  <script type="text/javascript" src="https://code.jquery.com/jquery-1.11.0.min.js"></script>

  <!-- Openlayers -->
  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/ol@latest/ol.css" />
  <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/ol@latest/dist/ol.js"></script>
  
  <!-- ol-ext -->
  <link rel="stylesheet" href="../../dist/ol-ext.css" />
  <script type="text/javascript" src="../../dist/ol-ext.js"></script>
  <!-- Pointer events polyfill for old browsers, see https://caniuse.com/#feat=pointer -->
  <script src="https://unpkg.com/elm-pep"></script>

  <link rel="stylesheet" href="../style.css" />
</head>
<body >
  <a href="https://github.com/Viglino/ol-ext" class="icss-github-corner"><i></i></a>

  <a href="../../index.html">
    <h1>ol-ext: OL3 feature animation</h1>
  </a>
  <p class="info">
    <i>ol.featureAnimation</i> provides animations to animate features on an OL3 map.
    Animation can be chained. 
    <br />
    Style with a zIndex of -1 are viewed as shadows and animated on the ground (drop or throw animation).
    <br />
    They are used with <i>animateFeature</i> function on <i>ol.layer.Vector</i> or <i>ol.Map</i>.
    <br /> 
    The animation is rendered in a postcompose frame.
  </p>

  <!-- DIV pour la carte -->
  <div id="map" style="width:600px; height:400px;"></div>

  <div class="options">
    <h2>Options:</h2>
    <ul><li>
      animation 1: 
      <select id="anim" onchange="add10()">
        <option value="Drop">Drop</option>
        <option value="Slide">Slide</option>
        <option value="Throw">Throw</option>
        <option value="Fade">Fade</option>
        <option value="Zoom">Zoom</option>
        <option value="ZoomOut">Zoom out</option>
        <option value="Show">Show</option>
        <option value="Teleport">Teleport</option>
      </select>
    </li><li>
      animation 2:
      <select id="anim2" onchange="add10()">
        <option value="Null">Null</option>
        <option value="Bounce">Bounce</option>
        <option value="Shake">Shake</option>
      </select>
    </li><li>
      geometry: 
      <select id="geom" onchange="add10()">
        <option value="Point">Point</option>
        <option value="LineString">LineString</option>
        <option value="Polygon">Polygon</option>
      </select>
    </li><!-- <li>
      Easing:
      <select id="easing" >
        <option value="easeOut">easeOut</option>
        <option value="upAndDown">upAndDown</option>
        <option value="bounce">bounce</option>
      </select>
    </li>--><li>
      <input id="side" type="checkbox" /><label for="side"> other side</label>
    </li><li>
      speed: <input id="speed" type="range" min="0" max="3" step="0.1" value="0.8" style="vertical-align:middle" />
    </li></ul>
    <i>Click on the map to drop a features / click on a feature to remove it!</i>
  </div>
  
  <script type="text/javascript">
  // Layers
  var layer = new ol.layer.Geoportail('ORTHOIMAGERY.ORTHOPHOTOS')

  // The map
  var map = new ol.Map({
    target: 'map',
    view: new ol.View({
      zoom: 5,
      center: [166326, 5992663]
    }),
    layers: [layer]
  });

  var style = [
    new ol.style.Style({
      image: new ol.style.Shadow({
        radius: 15,
      }),
      stroke: new ol.style.Stroke({
        color: [0,0,0,0.3],
        width: 2
      }),
      fill: new ol.style.Fill({
        color: [0,0,0,0.3]
        }),
      zIndex: -1
    }),
    new ol.style.Style({
      /* image: new ol.style.Icon({ src:"data/camera.png", scale: 0.8 }), */
      image: new ol.style.RegularShape({
        radius: 10,
        radius2: 5,
        points: 5,
        displacement: [0, 10],
        fill: new ol.style.Fill({ color: 'blue' })
      }),
      stroke: new ol.style.Stroke({
        color: [0,0,255],
        width: 2
      }),
      fill: new ol.style.Fill({
        color: [0,0,255,0.3]
      })
    })
  ];

  // Vector layer
  var source = new ol.source.Vector();
  var vector = new ol.layer.Vector({
    source: source,
    style: style // function() { return style }
  });
  map.addLayer(vector);

  /* Use filter or opacity * /
  var c = map.getView().getCenter()
  var g = ol.geom.Polygon.fromExtent(ol.extent.buffer(ol.extent.boundingExtent([c]),500000));
  vector.addFilter(new ol.filter.Crop({
    feature: new ol.Feature(g),
    fill: new ol.style.Fill({color: [255,0,0,.5]})
  }));
  vector.setOpacity(.5)
  /**/

  // Add a feature on the map
  function addFeatureAt(p) {
    var f, r = map.getView().getResolution() *10;
    switch ($("#geom").val()){
      case 'LineString':
        f = new ol.Feature(new ol.geom.LineString([
          [p[0]-8*r,p[1]-3*r], 
          [p[0]-2*r,p[1]+1*r], 
          [p[0]+2*r,p[1]-1*r], 
          [p[0]+8*r,p[1]+3*r]
        ]));
        break;
      case 'Polygon':
        f = new ol.Feature(new ol.geom.Polygon([[
          [p[0]-4*r,p[1]-2*r], 
          [p[0]+3*r,p[1]-2*r], 
          [p[0]+1*r,p[1]-0.5*r], 
          [p[0]+4*r,p[1]+2*r], 
          [p[0]-2*r,p[1]+2*r], 
          [p[0]-4*r,p[1]-2*r]
        ]]));
        break;
      case 'Point':
      default:
        f = new ol.Feature(new ol.geom.Point(p));
        break;
    }
    vector.getSource().addFeature(f);
    vector.animateFeature (f, [
      new ol.featureAnimation[$('#anim').val()]({
        speed: Number($("#speed").val()), 
        duration: Number(1000-$("#speed").val()*300),
        side: $("#side").prop('checked')
      }),
      new ol.featureAnimation[$('#anim2').val()]({
        speed: Number($("#speed").val()), 
        duration: Number(1000-$("#speed").val()*300),
        horizontal: /Slide/.test($('#anim').val())
      })
    ]);
  }

  // Add 10 random features
  function add10() {
    vector.getSource().clear();
    var ex = map.getView().calculateExtent(map.getSize());
    for (var i=0; i<10; i++) {
      setTimeout(function() {
        addFeatureAt([
          ex[0] +Math.random()*(ex[2]-ex[0]),
          ex[1] +Math.random()*(ex[3]-ex[1])
        ])
    }, 100*i);
    }
  }
  add10();

  // Drop a feature on click 
  map.on('click', function(evt) {
    var f, revers=false;
    map.forEachFeatureAtPixel (evt.pixel, function(feature) {
      f = feature;
      return true;
    });
    if (f) {
      // Remove feature
      vector.getSource().removeFeature(f);
      // Show animation 
      vector.animateFeature (f, [
        new ol.featureAnimation[$('#anim').val()]({
          speed: Number($("#speed").val()), 
          duration: Number(1000-$("#speed").val()*300),
          side: $("#side").prop('checked'),
          revers: true 
        })
      ]);
    } else {
      addFeatureAt (evt.coordinate);
    }
  });

  </script>
  
</body>
</html>